Growers are urged to protect glyphosate’s future, as a warning has been issued following the country’s first confirmed case ...

After Italian ryegrass with resistance to high rates of glyphosate was discovered on a Kent farm earlier this year, it was zero-till systems researchers pinpointed as particularly at risk. They ...

It controls Italian ryegrass, annual bluegrass and canarygrass, and it suppresses broadleaf and grass weeds such as wild oat, foxtail species, kochia, pigweed, chickweed, henbit and wild mustard.

Italian ryegrass has been growing in several fields on a farm in Kent. Scientists have confirmed it is resistant to glyphosate, considered to be the most effective weedkiller on the market.

For Italian ryegrass, early management is critical, with herbicide applications in February proving significantly more effective than those in March or April.

Paul Neve, professor of crop science University of Copenhagen, said Italian ryegrass resistance “hasn’t exploded into a huge problem” since the first cases in Australia in the 1990s.

Italian ryegrass is the only weed with suspect populations in the UK. Extensive testing of black-grass and a 2023 survey of 166 brome samples found no populations with glyphosate resistance. Trending ...

Around the world, at least 56 weed species including Italian ryegrass (Lolium multiflorum) have evolved glyphosate resistance, and it has happened independently in hundreds of different places.

Weed infestations, particularly Palmer amaranth, Italian ryegrass, and horseweed, are increasingly challenging row crop production due to rising herbicide resistance.

Italian ryegrass has been growing in several fields on a farm in Kent (Picture: Getty) A new ‘unkillable’ weed impervious to even the strongest herbicide has been found in the UK for the first ...